Array

Array utilities for access, transform, search, and workflow helpers.

Type

data-ops.array

Block Data Operations

Folderbasic/data-ops

Channels

Any

Pipe

Value

Scope

Any

Array (canvas label Array · plus the operation) runs one list Operation and writes the result to the data pipe. Add/remove operations return a new list; they do not change the original variable unless you store the pipe again.

These operations need the Callback handle connected to a Lambda: Map, Filter, Reduce, Flat map, Find, Find index, Some, Every, Group by, Key by, Partition. The run fails if the callback is not connected.

Use For Of when each item needs a full nested graph with conditions and other blocks. Use this block for a single list transform.

Configure

Setting	Description
Operation	Grouped list. Changing it resets the other fields
Remaining fields	Depend on Operation (for example Array, Index, Item)

Handles

Handle	Role
In (target)	Incoming connection
Out (source)	Continues after the operation (main path)
Callback	Required for callback operations. New callback scope per item. Connect to Lambda

Inside the callback body (after Lambda):

Path	Meaning
`args.item`	Current item
`args.index`	Zero-based index
`args.acc`	Reduce only — accumulator
`args.cur`	Reduce only — alias for the current item

End the body with a return. That returns from the callback, not from the whole workflow.

Operation	Return from the callback
Filter, Some, Every, Find, Find index, Partition	true/false
Group by, Key by	text key
Map, Flat map, Reduce	Transformed or accumulated value

Operation	Result	Inputs
Create	list	Optional Items
From	list	Value — wrap a non-list as one item; missing becomes `[]`
Length / Count	number	Array
Is empty	true/false	Array
Get	any	Array, Index
At	any	Array, Index — negative indexes from the end
First / Last	any	Array

Add and remove

Operation	Result	Inputs
Push / Unshift	list	Array, Item
Pop / Shift	list	Array
Insert	list	Array, Index, Item
Remove	list	Array, Index

Transform (callback)

Operation	Result	Inputs
Map	list	Array
Filter	list	Array
Reduce	any	Array, Initial value
Flat map	list	Array

Flat (no callback): Array, optional Depth (default 1).

Search

Operation	Result	Inputs
Includes	true/false	Array, Value
Index of	number	Array, Value
Find	any	Array — first match via callback
Find index	number	Array
Some / Every	true/false	Array

Combine, order, compare

Operation	Result	Inputs
Concat	list	Arrays — list of lists
Slice	list	Array, Start, optional End
Splice	list	Array, Start, Delete count, optional Items
Chunk	list	Array, Chunk size
Sort	list	Array, optional Direction (asc\|desc)
Reverse / Unique / Shuffle	list	Array
Equals	true/false	A, B — deep
Is subset	true/false	A, B — every item in A is in B

Aggregate, convert, helpers

Operation	Result	Inputs
Sum / Average / Min / Max	number	Array of numbers
Join	text	Array, optional Separator (default `,`)
To object	object	Array of `[key, value]` pairs
Compact	list	Array — drops null and missing items
Group by / Key by	object	Array plus callback key
Partition	list	Array — `[pass, fail]` via callback
Zip	list	Arrays — combine by index
Unzip	list	Array — reverse a zipped list

Use case

Filter rows from Table Find where a callback condition is true.
Map each id to a payload, then call an API once per item inside the callback, or Join ids for a query string.
Chunk a long list before sending batches.